/Engine/Source/Runtime/GameplayTags/Classes/GameplayTagsManager.h
Searches for a gameplay tag given a partial string. This is slow and intended mainly for console commands/utilities to make developer life's easier. This will attempt to match as best as it can. If you pass "A.b" it will match on "A.b." before it matches "a.b.c".
[FGameplayTag](API\Runtime\GameplayTags\FGameplayTag) FindGameplayTagFromPartialString_Slow ( [FString](API\Runtime\Core\Containers\FString) PartialString ) const